This book is a critical analysis of the issues and problems in the U.S. domestic arena and how these affect and interplay with the formulation and implementation of U.S. national security. The threats and challenges of the external environment are examined and analyzed with respect to their impact on the domestic political-social environment. Special attention is placed on the national security establishment. The result is a book that identifies major linkages between the domestic and national security agendas, showing how these agendas affect each other, and what such linkages mean in terms of national security policy and the ability of the United States to design and implement a national security policy that will be appropriate for the 21st century.